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5. Simplify [tex]-10+8 \cdot\left(4-7^2 \div 7\right)[/tex]

A. [tex]-19[/tex]
B. [tex]-34[/tex]
C. [tex]-15.7[/tex]
D. [tex]-17.3[/tex]


Sagot :

Let's simplify the expression step-by-step: [tex]\(-10 + 8 \cdot (4 - \frac{7^2}{7})\)[/tex].

1. Calculate the exponentiation:
[tex]\[ 7^2 = 49 \][/tex]

2. Perform the division:
[tex]\[ \frac{49}{7} = 7.0 \][/tex]

3. Simplify within the parenthesis:
[tex]\[ 4 - 7.0 = -3.0 \][/tex]

4. Perform the multiplication:
[tex]\[ 8 \cdot (-3.0) = -24.0 \][/tex]

5. Add the result to [tex]\(-10\)[/tex]:
[tex]\[ -10 + (-24.0) = -34.0 \][/tex]

The simplified value of the expression [tex]\(-10 + 8 \cdot (4 - \frac{7^2}{7})\)[/tex] is [tex]\(\boxed{-34}\)[/tex].